Audi S6 (2016) is 754 kg (1,662 lbs) lighter than Rolls-Royce Phantom (2017).
Rolls-Royce Phantom (2017) is 911 mm (35.87 inch) longer, 116 mm (4.57 inch) wider, 198 mm (7.80 inch) higher and has 54 liters (1.91 ft3) bigger cargo space than Audi S6 (2016).